15春西交《动力测试技术》在线作业满分答案

《15春西交《动力测试技术》在线作业满分答案》由会员上传分享，免费在线阅读，更多相关内容在工程资料-天天文库。

1、15春西交《动力测试技术》在线作业满分答案Openg15springto"powertesttechnology"onlinehomeworkExamtime:100testtime:SingletopicselectionTrueorfalse(30questions,60points・)11.A.B.C.D.Fullmarks:2Whenthetimedomainsignalismoved,thefrequencydomainsignalwill().A.extensionB.thecompre

2、ssionC.thesameOnlyphaseshiftFullmarks:2Thedistributionstatisticsgivenbytheprobabilitydensityfunctionarerandom・A.phaseB.thetimedomainC.amplitudedomainD.cycleFullmarks:2Theidealtestdeviceshouldhave()A.Single-valued,indeterminateinputandoutputrelationsAsi

3、nglevalued,determinedinputandoutputrelationshipC.Multi-valued,uncertaininputandoutputrelationshipsA.multi-valued,determinedinputandoutputrelationshipsFullmarks:2Inordertoeliminatetheeffectofthechangeofthepiezoelectricsensorcabledistributioncapacitanceo

4、ntheoutputsensitivity,theavailableamplifieris()ChargeamplifierVoltageamplifierC.capacitanceamplifierD.preamplifierFullmarks:26.1A.B.C.D.Fullmarks:2Semiconductorthermistorincreaseswithtemperature,itsresistancevalue()A.declineC.to0StaythesameFullmarks:28

5、.1A.B.C.D.Fullmarks:2Normally,thesemiconductorstrainismoresensitivethanthemetalstrain.A.203030~50B.C.50704060D.Fullmarks:2Thefrequencyresponsefunctionreflectstheprocessofthesystemresponse()A.thesteadystateB.transitionC.SteadystateandtransitionD.steadys

6、tateortransitionFullmarks:211.1A.B.C.D.Fullmarks:2Ameasuringcircuitthatturnsthevariationoftheparameterssuchasresistors,capacitors,inductanceintovoltageorcurrentoutput・A.AbridgeOperationamplifierModulatorcircuitD."IterFullmarks:213.1A.B.C.D.Fullmarks:2T

7、hedegreetowhichthecurvedeviatesfromitsintendedlineiscalled()A.sensitivitynonlinearityC.resolutionReturnerrorFullmarks:215.1A.B.C.D.Fullmarks:2Thefrequencyofthepiezoelectricaccelerometershouldbebasedonitsnaturalfrequency・A.ismuchhigherthanB.isfarlowerth

8、antheC.equaltotheD.notsureFullmarks:217.1B.C.D.Fullmarks:217.1A.B.C.D.Fullmarks:218.1A.B.C.D.Fullmarks:217.1A.B.C.D.Fullmarks:2Thepassingfunctionofthetestsystemand()A.thephysicalstructureofthesystemisconcernedB.thephysicalstructureofthe